The Elko-Bis ESPAC V T2 20/275 4+0 surge arrester protects electrical installations from overvoltages caused by indirect lightning discharges. Its four-pole design is intended for sub-distribution boards in homes, offices, and industrial facilities, and its visual indicator shows its status. It features a contact for remote signalling.
- Type: Surge arrester
- Protection category: T2
- Poles: 4
- Maximum continuous operating voltage AC: 275 V
- Maximum nominal discharge current (8/20): 20 kA
- Status indication: Visual
- Remote signalling contact: Yes
- Width: 72 mm
- Mounting: On a 35 mm DIN rail, occupying two modules
- Power supply connection: By cable or fork- or pin-type busbar
- Cross-section of flexible stranded conductor: 4–25 mm²
- Cross-section of rigid conductor: 4–35 mm²